Ore-concentrator.



E. DBISTER.

om GONGENTRATOR APPLIOATION FILED AUG. 17,1905. @239B Patented May 11,1909.l

2 SHEETS-SHEET 1.

11H. [im

ATTORNEY E. DBI-STER.

ORB GONGENTRATOR.

APPLIUATIQN FILED AUG.17,1905.

, Patented May 11, 1909.

Z SHEETS-SHEET 2` WITNESSES:

ATTORNEY UNITED sTATEs PATENT oEEroir..l

EMIL DEISTER, OF FORT WAYNE, INDIANA, ASSIGNOR T0' THE DEISTER CONCENTRATOR COMPANY, A CORPORATION OF INDIANA.

ORE-GONCEN'IRATOB.

Specification of Letters Patent.

' Application led August 17, 1905. Serial No. 274,515. i

- Patented Mayinisoe.-

dent of Fort Wayne, in the county of- Allen' and State of Indiana, have invented certain new and useful Improvements in Ore-Concentrators, of which the following is a speciication.

This invention relates to improvements in concentrato-rs for treating ore pulp, and the object thereof is to provide a machine in which the transientl body of pulp will be come enriched by an accumulation of values,

and from'which the concentrates product, in 'i a clean state, will become extracted; and a further object is to so construct the machine as to avoid serious vloss of values or an unclean concentrates cproduct which ordinarily occurs because ofvariations in richness of the pulp as well as irregularity.l in supplying pulp to the machine. These ob'ects are accomplished by the construction i lustrated in the accompanying drawings', in which:

Figur-e 1. is ag'plan .view of themachine, With parts thereof cut awa Fig. 2. is a vertical sectional view on the ine x-:c of Fig. 1; Fig. 3. is a plan view of one of the shoals;

Fig. 4. is a sectional view of one of the sho'als and a portion of the concentrating-pan; Fig. 5. is a detail view in perspective, showing one of the series of 'Shoals which form a part of the machine; Fig. 6. is a detail sectional view of a portion of the machine show-v ing one of the struts which connect the concentrating-pan and frame `for holding'theV formerin central relation with the latter.

Similar numerals of reference indicate correspondin parts throughout 'the several views, an referring noW to the same- 1 is a supporting frame having bearings 2 in which is mounted a driving-shaft 3.

4 is a concentrating-pan having the form of a ring and with its outer and inner margins upturned, the latter forming an annular dam 5. The outer portion of the pan is flat d affords a continuous level annular ath and the inner portion 7 of the pan s opes downwardly from the path 6 toward the dam 5, and has thereon a uniform 'series of helical iillcs 8, each of which ranges in its course gradually outward from the gutter 9 and terminates at the inner-margin of the path 6.

'Bhe gutter 9 is annular, and a series of openings 10 lead therefrom through the pan, the openings serving for the discharge of tailings.

' l A- funnel 11 is mounted centrally inv connectionfwith the frame 1 beneath the eoncen- 12 by means of radial struts 13, each of which has a hooked connection at its inner end with the correspondin bracci-1, which is fixed to the underside of t e pan, and has at its outer end a yielding connection with the frame 1. The iel'ding connection is formed by lacing the s eeve 15 and nuts 16 upon the end of the strut which lextends through the frame 'and with a leather washer 17 interposed between the sleeve and nuts.

Uponthe ends of the driving-shaft 3 are mounted oppositely disposed eccentrics 18, each having in connection therewith a driving rod 19 which extends loosely through a corresponding bracket 20, the latter being fixed to the underside of the pan at a point diametrically. opposite the other' bracket. Each of said drivln rods has mounted thereon a driving hea consisting of Va 4rubber buffer 21 which impinges the side of the adjacent bracket 20, land upon the opposite side of said bracket a compression spring 22 'is arranged in' connection with an adjusting '24 which is rigldly fixed upon the driving rod. The parts4 of the ,respective driving` heads are arranged relatively opposite so that when the driving-rods are actuated a differentially oscillated motion will be imparted to the an, the differential tendency of which is suc .as to cause the pulp to move in the direction indicated by the arrow. Tight and loose pulleys 2.5 are mounted upon the shaft 3 for t e purpose of connecting the same with a driving-belt.

Upon the level path 6, adjacent the riftled inner portion of the pan, ls'arranged an annular series of Shoals 26 which constitutes fa particular feature of thisinvention. Each shoal is located preferably-at the outer terminal of fa riffle 8, and thc upper surface thereof gradually ascends from the surface of the path 6 toward its head 27. 'lhe sides of the shoal gradually narrow toward its head, and the upper or concentrating surface 28 of the shoal becomes narrow at its u per portion and leads up to the throat 29 w cli 110 soA communicates -with the concentrates discharge-opening 30, the latter connecting with the discharge-spout 31. Upon either side lof the throat29 is a miniatureplateau 32, each of which extends to the corres onding edge of the shoal, andhasl a gra uallyv rounded inner edge `33. l' Upon the concentrating surface-of the shoal 1s arranged a series of convergently dis osed riflles 34, they of Water 1n thepan as established by the height of the dam.

A series of pipes 37, having water ta s 38 at their outer ends lead from a central ounltain 39 which is supplied with 'dressing water through a pi e 40, and each of the pipes 37 1s ada te to discharge dressing Water 1nto the ead of the corresponding shoal, the quantity of Water thus supplied to the shoals 1s regulated by manipulatin the ta s 38. It is esirable that the ore pu p be fe to the an'uniformly around its outer margin, and) to effect this, an annular feed trough 41, having numerous openings 42 in its bottom, is attachedto the pan slightly above the Water level therein, and a serles of radial feed s outs 43 lead from a central hopper 44 into t e feed trough. The feed spouts and hopper are rigidly connected together and are sup orted by braces 45, the lower ends of Wine rest in the funnel 11, and the fountain 39 is supported by attachment to the underside of the hopper 44.

In the operation of this invention, the pan is set in oscillating motion by means of the driving mechanism, and ore pulp is then conveyed tothe hopper through a supply pipe 46 fromwhence it gravitates through,

the feed spouts and feed trough onto the concentrating-path 6 evenly at the outer margin thereof. The ore, tends to settle upon thevconcentrating surface of the pan, and the overlying portion thereof will Work inward over the riffles toward the gutter 9, and because of the helical riliies, and the differential motion of the pan, the underlying portion of the orewillbe continually carried outward onto the path 6. It will fherefore appear that the mineral values of the ore, bemg heavier than the matrix and therefore lowermost in the` pan, Willtend to accumulate col more or less upon the path 6; and the angue o." overlying portion of the pulp wil continually move to the gutter 9 and be discharged through the openings 10. It is the intention that the level of water inthe pan shall be above that of the settled pulp therein, and to effect this condition more or less -of the openings 10 may be plugged sol that water from the pan will continuously overflow' the dam 5, but a sufficient number of the openings 10 are left open to insure the passage of coarse tailings so that no detrimental accumulation occurs. The tailings` discharged through the openings 10, and the water passing over the dam 5 fall into the funnel 11 and pass therefrom through its lower-end. As the enriched body of pulp upon the path 6 moves around the pan, 1t enters the shoals,' and because of the prejection of the latter and the convergence of the riflles thereon, the pulp becomes congested more or less toward the center thereof, and is also raised, accordingly above the general ore level` in the pan. The overlying portion ofthe ore matter on the shoals tends to Work laterally outward, and the underlyin portion thereof is influenced inwardly by t e riffles as it passes toward the throats. The overlying portion of the pulp upon the shoals carries more or less gangue which is gently Washed away because of its Inovement in the water which lies above the general-ore level in the pan; and as the' congested concentrates pass between the plateaus, the mass of concentrates in the throat of each shoal becomes Washed clean of its overlying portion by the dressing water which issues from the ports 36, and theI conf ycentrates thus cleansed pass into the openings 30, and are discharged from the spoutsl 31. The dressing Water passes from the ports and spreads out upon the plateaus and floats the overlying ore-matter over the edges of the shoals back again into the pan.

-Having described my invention what l claim as new and desire to secure by Letters Patentis: v

1. In an ore coneentrator, a differentially actuated pan adapted to maintain a water level therein slightly above' the general level of settled ore-matter in the pan; a gradually ascending Shoal projecting from the concentrating surface of the pari and having a discharge-opening, and throat leading to the opening from the inclined concentrating surface of the shoal, and having also ports leading from the head of the Shoal, adapted to discharge dressing water adjacent the respective sides of t e throat thereof. 2. In an ore concentrator, a differentially actuated concentrating pan having a gradually ascending shoal resting upon its con centrating surface, the shoal having a discharge-opening near its head, and throat leading to the openin from the inclined coni centrating surface o the shoal, the diront being com aratively narrower than said-inclinedsur ace.

3. In an ore concentrator, a differentially actuated concentrating-pan and a gradually ascending shoal resting upon the concentrating-surface of the pan, and having a discharge-opening near 'its head, -and thro-at leading' to its openinglfromjtheinclined concentratin 'surfacethereof;. and having also ports lea ing from'its head,^adapt'ed to discharge dressing water to-said shoal adjacent the respective sides ofthethroat-thereof.

'4. In an ore concentrator,V a d ierentiall actuated pan having a concentrates -pat and an inclined portion with rimes-'thereon' adzpted to. direct underlying' ore-matter to sai path a dam in connection With'the pan atiits tailingsv dischargV dgr he pan having av series of ,openingsy leading` through its bottom adjacent the dam; fand one or more' Shoals locatedv on 'the 'concentrates' path of the pan. and pro`ecting gradually/upward' therefrom and eac havin a discharge opening forconcentrates, the am being adapted to maintain the water' level in thel pan a '-j proximately up to the openings-"in the shoalg. 5. ln'an ore'concentrator, a differentially actuated concentrating-pan a 'gradually ascending shoal projecting from thev concen tratesf path of the pan,. and having a discharge-opening near its head, and throat leading to the openingfroin the inclined conthroat.

7. In' an oreconcentrator, a differentially actuated concentrating-pan; and a gradually ascendiiigfshoal adapted to receive ore matter from .the concentrating surface of the pan, and having plateaus near its dischargeend, and ya throat .intervening between t -centrates discharge-opening plateaus', 'and ports adaptedA to discharge dressing water-upon the plateaus, and having valso adisc'harge-openng, thesaid throat leading to said opening from the inclined concentrating surfaceof the shoal. 1

an ore eoncent'ator," a differentially actuated concentrating-pan; a gradually ascendin Shoal adapted Ito receive ore-matter fromt' e concentrating surface of the pan,4

-and having plateaus :near its discharge-end,

and a throat intervening between the plateaus; landv having also ports leading to the plateaus respectively, and a dischar e opening at the end' of the throat and rimes arranged upon? the concentrating surface of the shoal which lead toward the throat thereof.

. 9. l'n an ore concentrator, a differentially actuated concentratin -pan .having one or more' gradually ascending Shoals adapted to receive ore-matter from the concentrating surface thereof, and each shoal having a conend, and throat leading tothe opening rom the inclined concentrating sur ace of the shOaI, the an being adapted tomaintain a water leve therein approximately inline with thethroats of the shoals.

10. In an ore concentratoiya differentially' actuated concentrating pan having one or more gradually ascending Shoals-adapted t o ,receive ore-matter from the concentrating surface thereof, .and each having aconcentrates dischar e-op'eningnear'its upper` end land throat lea ing to'the opening from the inclined concentrating surface of the shoal, the throat 4being comparatively narrower than the latter surface, and means `for a"plying dressing Water to the-Shoals to float t e overly' g orematterupon the Shoals back again into the an.

In testimony whereof I-aiix my signature, in presence of two witnesses.

EMIL DEis'rER.

lWitness s:-

H. LAMPKE,

near its utpper 

